CN114690927A

CN114690927A - Display device

Info

Publication number: CN114690927A
Application number: CN202011628031.3A
Authority: CN
Inventors: 亓东欣; 陈莹; 徐爱臣
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2022-07-01

Abstract

The application discloses display device relates to touch display technical field for solve jumbo size panel and can't improve the problem of touch-control precision under the demand that satisfies the outward appearance. The application relates to a display device, comprising: the touch panel is used for receiving touch operation and comprises a touch sensor and a display panel positioned below the touch sensor, the touch panel is provided with a visible area and a black frame area, the touch sensor comprises a substrate, an electrode layer with a plurality of electrode wires is laid on the substrate, and the electrode layer is positioned in the visible area; the touch control panel is used for driving and controlling the touch control sensor; the flexible circuit board is located in a black frame area of the touch panel, and the flexible circuit board is electrically connected with the electrode wire in the electrode layer and the touch panel respectively. The display device of the application is used for displaying various information.

Description

Display device

Technical Field

The application relates to the technical field of touch display, in particular to a display device.

Background

With the continuous development of human-computer interaction requirements, more and more touch films are applied to various display products, but the application of television products is slow, mainly because of the limitation of panel manufacturers, the panel manufacturers still cannot realize mass production and shipment of touch panels in the large-size field.

Currently, some commercial televisions can realize a touch function, and generally adopt an architecture as shown in fig. 1, including: a touch film (i.e., a touch pattern), a Flexible Printed Circuit (FPC), and a touch panel, the touch film including a plurality of driving electrode lines TX and sensing electrode lines RX, the touch film being connected to the touch panel through the FPC, the touch panel being a driving Circuit for controlling the touch film. A Black Matrix (BM) Area is located between a Visible Area (VA) and an Active Area (AA) of the touch film, and one purpose of the Black Matrix Area is to cover the lines such as the sensing electrode lines RX and the driving electrode lines TX. In order to improve the touch accuracy, the black frame area is increased, but in order to meet the requirement of the appearance, the black frame area is usually decreased as much as possible, so that the touch accuracy cannot be improved while the requirement of the appearance is met.

Disclosure of Invention

The embodiment of the application provides a display device, which is used for solving the problem that the touch precision of a large-size panel cannot be improved under the condition of meeting the requirement of appearance.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

an embodiment of the present application provides a display device, including: the touch panel is used for receiving touch operation and comprises a touch sensor and a display panel positioned below the touch sensor, the touch panel is provided with a visible area and a black frame area, the touch sensor comprises a substrate, an electrode layer with a plurality of electrode wires is laid on the substrate, and the electrode layer is positioned in the visible area; the touch control panel is used for driving and controlling the touch control sensor; the flexible circuit board is located in a black frame area of the touch panel, and the flexible circuit board is electrically connected with the electrode wires in the electrode layer and the touch panel respectively.

In some possible embodiments of the present application, one end of the flexible circuit board extends out of the black frame area and is electrically connected to the touch pad.

In some possible embodiments of the present application, a lower surface of the flexible circuit board is flush with a lower surface of the substrate, or the substrate extends into the black frame region, and the flexible circuit board is located above the substrate.

In some possible embodiments of the present application, the touch panel further includes an interposer, where the interposer electrically connects the flexible circuit board and the touch panel.

In some possible embodiments of the present application, the touch panel further includes a flexible flat cable, and two ends of the flexible flat cable are respectively connected to the interposer and the touch panel.

In some possible embodiments of the present application, the electrode lines of the touch sensor are connected to the flexible circuit board by bonding.

In some possible embodiments of the present application, the electrode layer in the touch sensor includes a first area and a second area, the electrode lines are laid in the first area and the second area, and a density of the electrode lines in the first area is greater than a density of the electrode lines in the second area.

In some possible embodiments of the present application, the plurality of electrode lines include a plurality of sensing electrode lines and a plurality of driving electrode lines; the flexible circuit board includes: a first flexible circuit board through which the plurality of driving electrode lines are electrically connected to the touch pad; a second flexible circuit board through which the plurality of sensing electrode lines are electrically connected to the touch pad; the first flexible circuit board and the second flexible circuit board are located on the same side of the touch sensor.

In some possible embodiments of the present application, one side of the display panel is connected to a plurality of third flexible circuit boards, the first flexible circuit board, the second flexible circuit board and the third flexible circuit board are all located on the same side of the display panel, and the first flexible circuit board, the second flexible circuit board and the third flexible circuit board are arranged in a staggered manner.

In some possible embodiments of the present application, the first flexible circuit board and the second flexible circuit board are located at a ground side end of the display panel.

In some possible embodiments of the present application, the flexible printed circuit board further includes a front cover for covering the first flexible circuit board, the second flexible circuit board, and the third flexible circuit board.

The prior art is limited by materials and process processes required for directly manufacturing electrode wires on a substrate, so that the line width and the line distance of the electrode wires manufactured on the substrate of the touch sensor located in a black frame area of the display device are large (for example, the line width and the line distance of the electrode wires are both more than 60 micrometers), whereas the black frame area of the display panel of the embodiment of the application is provided with a flexible circuit board, the electrode wires in the original black frame area are directly arranged in the flexible circuit board, and because the process processes of the flexible circuit board can make the line width and the line distance of the electrode wires in the flexible circuit board smaller (for example, the line width and the line distance of the electrode wires can be reduced by 30 micrometers compared with those of the electrode wires directly arranged on the original substrate), more electrode wires can be arranged on the basis of not increasing the area of the black frame area of the touch panel, and the touch precision of the display device is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a diagram illustrating a structure of a touch film in the prior art;

fig. 2 is an exploded perspective view of a display device according to an embodiment of the present application;

fig. 3 is an exploded perspective view of a touch panel according to an embodiment of the present disclosure;

FIG. 4 is a schematic cross-sectional view of a display device according to an embodiment of the present application;

FIG. 5 is a schematic cross-sectional view of another display device according to an embodiment of the present application;

FIG. 6 is a schematic diagram illustrating an architecture of a touch sensor in a display device according to an embodiment of the present disclosure;

FIG. 7 is a schematic view of an embodiment of a display device;

FIG. 8 is a schematic view of another structure of a display device according to an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a display device according to an embodiment of the present application;

fig. 10 is a schematic view illustrating a first partition structure of electrode lines in a display device according to an embodiment of the present application;

fig. 11 is a second schematic view illustrating a first partition structure of electrode lines in a display device according to an embodiment of the present application;

fig. 12 is a schematic view of a second partition structure of electrode lines in a display device according to an embodiment of the present application.

Reference numerals are as follows:

101-day side, 103-right side, 102-left side, 104-ground side, 200-touch panel, 201-visible area, 202-black frame area, 210-display panel, 220-touch film; 2201-touch sensor, 22011-substrate; 22012 parts of an electrode layer, 2202 parts of a protective film, 230 parts of a touch panel, 240 parts of a flexible circuit board, 2101 parts of a Source board, 110 parts of a back plate, 120 parts of a reflecting sheet, 130 parts of a light guide plate, 140 parts of an optical membrane, 150 parts of a middle frame and 160 parts of a light Source.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the description of the present application, "and/or" is only one kind of association relationship describing an associated object, and means that three kinds of relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In some embodiments of the present application, the display device may be a liquid crystal display, and the liquid crystal display is mainly composed of a backlight source, a liquid crystal panel, and a driving circuit. The liquid crystal panel does not emit light, and brightness display needs to be realized by a light source provided by a backlight source.

The liquid crystal display is developed by placing liquid crystal between two pieces of conductive glass, and driving the liquid crystal by an electric field between two electrodes to induce an electric field effect of twisted nematic liquid crystal molecules to control the backlight transmission or shielding function, thereby displaying an image. If a color filter is added, a color image can be displayed.

Fig. 2 is an exploded perspective view of a display device according to an embodiment of the present application.

Referring to fig. 2, the display device includes a day side 101, a right side 103, a left side 102, and a ground side 104, wherein the day side 101 is opposite to the ground side 104, the left side 102 is opposite to the right side 103, the day side 101 is connected to one end of the left side 102 and one end of the right side 103, respectively, and the ground side 104 is connected to the other end of the left side 102 and the other end of the right side 103, respectively.

With reference to fig. 2, the display device includes a backlight module and a touch panel 200, the backlight module is used to provide a backlight source to the touch panel 200, and a direction indicated by an arrow in fig. 2 is a light emitting direction of light in the display device.

Along the light-emitting direction of the light in the display device, the backlight module sequentially includes a back plate 110, a reflective sheet 120, a light guide plate 130, an optical film 140, a middle frame 150 and a light source 160 located at one side of the back plate 110.

In some embodiments, the light source 160 is used to generate light, and in FIG. 2 the light source 160 is located on the ground side 104 of the display device.

In some embodiments, the light source 160 is provided in the form of a light bar, the light source 160 includes a circuit board, and a plurality of LED lamps disposed on the circuit board, and light emitted from the light source 160 enters from one side.

In some embodiments, the optical film 140 is located on the light exit side of the light guide plate 130, and the optical film 140 is used for brightness enhancement of light.

The optical film 140 may include one or more films including at least one of a prism film and a brightness enhancement film. The prism film reflects the light emitted at a temperature of more than 70 degrees back to be reused by utilizing the law of total reflection, and the dispersed light can be concentrated in the range of 70 degrees of the normal to emit light, so that the brightness at the center of the axis is increased by 110 percent. Brightness enhancement films recycle 50% of the originally absorbed polarized light, allowing P1 polarized light to pass through, while reflecting P2 polarized light back for recycling into P1 and P2, which can increase brightness by 60%.

In one embodiment, the light guide plate 130 includes a light incident side and a light exiting side, the light source 160 is located at the light incident side of the light guide plate 130, and light entering from the light incident side is emitted from the light exiting side of the light guide plate 130 by refraction and total reflection of the light guide plate 130, thereby transforming the linear light source into a surface light source.

In some embodiments, the reflective sheet 120 is located on a side opposite to the light exit side of the light guide plate 130. The reflector 120 is used to reflect light to the light-emitting direction, which is beneficial to the uniform distribution of light emitted from the light source. The reflective sheet 120 is fixed to a surface of the rear plate 110.

In some embodiments, the middle frame 150 is disposed near the peripheral edge of the display device and is used for fixing the optical elements (such as the combination of the reflective sheet 120, the light guide plate 130, and the optical film 140) in the backlight module.

Referring to fig. 3 and 4, the touch panel 200 is used for receiving a touch operation. The touch panel 200 includes a display panel 210 and a touch film 220, wherein the display panel 210 is used for displaying images, and the display panel 210 includes a display area and a circuit board located at one side of the display area, and the circuit board is used for driving and displaying the whole display panel; the touch film 220 includes a touch sensor 2201 and a protective film 2202, the touch sensor 2201 is located above the display panel 210, the protective film 2202 is attached on the touch sensor 2201, and the protective film 2202 can be a fingerprint-proof film, a blue-proof film and the like.

Referring to fig. 2 and 4, the display device further includes a touch pad 230 and a flexible circuit board 240, wherein the touch pad 230 is used for driving and controlling the touch sensor 2201; the flexible circuit board 240 electrically connects the touch sensor 2201 with the touch pad 230.

Referring to fig. 3, the display device further includes a Chip On Flex (COF) and a Source board 2101, the COF is respectively connected to the display panel 210 and the Source board 2101, and the Source board 2101 is configured to drive and control the display panel 210.

The present application is directed to a display device having a touch panel 200, and the structure, function, implementation, and the like of the display device will be described in detail first.

The touch panel 200 includes a visible region 201 and a black frame region 202, the touch sensor 2201 includes a substrate 22011, and the substrate 22011 may be made of glass or PET (Polyethylene terephthalate). An electrode layer 22012 having electrode lines is laid on the substrate 22011, the electrode layer 22012 is located in the visible area 201 of the touch panel 200, and the electrode lines of the electrode layer 22012 penetrate through the black frame area 202 to be electrically connected to the touch panel 230. At present, the trend of the display device is that the black frame area 202 is as narrow as possible, but in order to meet the requirement of high-precision touch, the number of touch channels needs to be increased, that is, the number of electrode lines is increased, that is, the density of the driving electrode lines TX and the sensing electrode lines RX is increased, that is, the distance between adjacent driving electrode lines TX and adjacent sensing electrode lines RX is decreased, which may result in the increase of the width of the black frame area 202, for example, on the basis that the pitch of the electrode lines in the black frame area 202 is not changed, the width of the black frame area 202 is increased by increasing the number of electrode lines, or the pitch of the electrode lines in the black frame area 202 is decreased by increasing the number of electrode lines, which may not be realized if the requirement on the manufacturing process is high. Therefore, in order to meet the requirements of appearance and high-precision touch, in some embodiments of the present application, the flexible circuit board 240 is directly disposed on the black frame area 202 of the touch panel 200, and the electrode lines coming out of the visible area 201 can be directly connected to the flexible circuit board 240, as shown in fig. 7.

The prior art is limited by the materials and process required to fabricate the electrode lines directly on the substrate 22011, the line width and line distance of the electrode lines manufactured on the substrate 22011 of the touch sensor 2201 in the black frame area 202 of the display device are large (for example, the line width and line distance of the electrode lines are both more than 60 μm), in the display device of the embodiment of the application, the flexible circuit board 240 is disposed in the black frame area 202 of the touch panel 200, so that the electrode lines in the black frame area 202 can be directly disposed in the flexible circuit board 240, since the process of the flexible printed circuit board 240 can reduce the line width and the line distance of the inner electrode lines (for example, the line width and the line distance can be reduced by 30 μm compared with the line width and the line distance of the electrode lines directly formed on the original substrate 22011), on the basis of not increasing the area of the black frame area 202 of the touch panel 200, more electrode lines can be arranged, so that the touch precision of the display device is improved. The display device provided by the embodiment of the application can be applied to televisions, computer displays and the like.

The technical solution of the present application will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Fig. 2 to 7 show a specific embodiment of a display device of the present application, in which a touch panel 200 of the display device includes a display panel 210, a touch film 220 and a touch pad 230, in which the touch film 220 includes a touch sensor 2201 and a protective film 2202, and the display panel 210 is located below the touch sensor 2201; the touch panel 230 is used to drive and control the touch sensor 2201; the touch panel 200 is provided with a visible area 201 and a black frame area 202, the touch sensor 2201 includes a substrate 22011, an electrode layer 22012 with electrode wires is laid on the substrate 22011, the electrode layer 22012 is located in the visible area 201 of the touch panel 200, the black frame area 202 of the touch panel 200 is provided with a flexible circuit board 240 connected with the electrode wires in the electrode layer 22012, and the flexible circuit board 240 extends out of the black frame area 202 and is electrically connected with the touch panel 230. According to the scheme, the flexible circuit board 240 in the black frame area 202 is connected with the touch pad 230 without specially arranging an external flexible circuit board, but the flexible circuit board 240 in the black frame area 202 extends out of the outer side of the black frame area 202 and is directly connected with the touch pad 230, so that the process is convenient to manufacture.

It should be noted that the substrate 22011 may be disposed only in the viewing area 201, and the lower surface of the flexible circuit board 240 is flush with the lower surface of the substrate 22011, as shown in fig. 4. Alternatively, the substrate 22011 extends from the visible region 201 to the black frame region 202, and the flexible circuit board 240 is located above the substrate 22011, as shown in fig. 5. For example, the lower surface of the flexible circuit board 240 is connected (e.g., by gluing) to the upper surface of the substrate 22011.

The electrode lines in the touch sensor 2201 include a plurality of driving electrode lines TX and a plurality of sensing electrode lines RX, wherein the plurality of driving electrode lines TX and the plurality of sensing electrode lines RX are connected to the flexible circuit board 240 in a bonding manner, so as to achieve close connection and good electrical connection between the electrode lines and the flexible circuit board 240.

Fig. 7 shows a schematic diagram of touch lines pattern, in fig. 7, the transverse electrode lines are driving electrode lines TX, and the longitudinal electrode lines are sensing electrode lines RX.

The number of the sensing electrode lines RX may be set to be greater than the number of the driving electrode lines TX to ensure touch accuracy. For example, the number of the sensing electrode lines RX is twice the number of the driving electrode lines TX.

It should be noted that the bonding is a chip wire bonding and chip film coating process, and the bonding can be used for interconnection between the electrode terminals and the flexible circuit board, interconnection between the flexible circuit board and the rigid circuit board, and interconnection between the flexible circuit boards. For example, an electrically conductive adhesive may be placed between the components to be joined and then heated under pressure to form a stable and reliable mechanical and electrical connection between the components. This process may also be referred to as thermocompression bonding or thermocompression.

The flexible circuit board 240 in the embodiment of the present application may also be connected to the touch pad 230 by bonding.

The number of the flexible circuit boards 240 disposed in the black frame area 202 of the touch panel 200 of the display device according to the embodiment of the present disclosure may be one or more. For example, the flexible circuit board 240 is provided on any one of the ground side 104, the left side 102, the right side 103, and the day side 101 of the substrate 22011; for another example, the flexible circuit board 240 is disposed in the black frame area 202 on any two, three, or four sides of the ground side 104, the left side 102, the right side 103, and the antenna side 101 of the substrate 22011, and the plurality of driving electrode lines and the plurality of sensing electrode lines are electrically connected to the flexible circuit board 240 on the corresponding side. The display device shown in fig. 7 is provided with the above-described flexible circuit board 240 in each of the black frame regions 202 on the ground side 104, the left side 102, and the right side 103.

Referring to fig. 8, the plurality of flexible circuit boards 240 include a first flexible circuit board (hereinafter, referred to as a first FPC) and a second flexible circuit board (hereinafter, referred to as a second FPC), the first FPC electrically connecting the plurality of driving electrode lines TX with the touch pad 230; the second FPC electrically connects the plurality of sense electrode lines RX and the touch pad 230, and the plurality of flexible circuit boards 240 are located on the same side of the substrate 22011 (e.g., the ground side 104 of the black frame region 202), i.e., the first FPC and the second FPC are located on the same side of the substrate 22011, so that the frame of the display device can be reduced, and the display device is more attractive.

The number of the first FPCs and the number of the second FPCs may be allocated according to actual situations, for example, according to the width size of the black frame region 202 or according to the length-width ratio of the visible region 201 of the substrate 22011.

In the embodiment shown in fig. 3, the display device further includes a Chip On Flex (COF) and a Source board 2101, the Chip On Flex (COF) is respectively connected to the display panel 210 and the Source board 2101, and the Chip On Flex (COF) can be regarded as a third flexible circuit board, which extends beyond the Source board 2101.

The third flexible circuit board and the first FPC and the second FPC in the touch sensor 2201 are both located on the same side of the display panel 210, so that the third flexible circuit board and the second FPC are arranged, the third flexible circuit board and the touch sensor can be completely shielded by using the same component, and can be shielded only on one side, thereby being beneficial to the frameless design of other three sides and being free from great change on the basis of the original household television.

With reference to fig. 9, the third flexible circuit board, the first FPC and the second FPC in the display device of this embodiment are staggered to avoid the friction between the upper layer and the lower layer.

The first FPC and the second FPC are both bent from the ground side 104 to the back of the display device, so that the width of an outer frame of the ground side 104 of the display device is reduced, and the touch pad 230 is convenient to mount, fix and store.

The display device of the embodiment of the application further includes a front shell, and since the third flexible circuit board and the first FPC and the second FPC in the touch sensor 2201 are both located on the same side of the display panel, the front shell is only installed on the side to shield all the flexible circuit boards (including the first FPC, the second FPC and the third flexible circuit board), so that the frame of the display device is reduced.

In some embodiments of the present application, the display device further includes an adapter plate a, and one or more of the plurality of flexible circuit boards 240 mounted in the touch sensor 2201 are electrically connected to the touch pad 230 through the adapter plate a to adapt to a placement position of the touch pad 230, and at the same time, to facilitate assembly of the display device.

It should be noted that, in the embodiment of the present application, the display device further includes a Flexible Flat Cable (FFC), and the connection between the touch panel 230 and the adapter board a is realized through the Flexible Flat Cable.

The first FPC and the second FPC are connected to the touch pad 230, if the touch pad 230 is not large enough or in order to avoid the placement position of other circuit boards in the home television, the touch pad 230 is not often placed at the middle position, and when the touch pad 230 is placed at a non-middle portion, i.e., near a certain end of the display device, with respect to the touch pad 230, one flexible circuit board 240 (the first FPC or the second FPC) located at the edge in fig. 9 is connected to the touch pad 230 through the connection board a.

If the first FPC (or the second FPC) is directly manufactured to be directly connected to the length of the touch panel 230, the first FPC (or the second FPC) is often integrally provided with the touch sensor 2201, and if the first FPC (or the second FPC) is long, transportation and assembly are not facilitated.

It should be noted that the touch pad 230 is placed on the side where the FPCs are concentrated, and only one FPC is connected to the FFC line through the adapter plate a, so that the connection requirement is met, the use of additional components is reduced as much as possible, and the cost is reduced.

In the embodiment of the application, the length of the touch pad 230, the width of the touch pad 230, or both the length and the width of the touch pad 230 can be increased, so that the number of connectable first FPCs and the number of connectable second FPCs can be increased, electrode lines are increased, and the touch precision is improved.

In other embodiments of the present application, the electrode layer of the touch sensor 2201 in the display device is designed in different areas, electrode lines may be added to the touch area portion requiring high-precision touch, and the original number of electrode lines or the number of electrode lines may be maintained in other areas of the touch sensor 2201, so that the occupation of the electrode lines on the black frame area 202 is reduced as much as possible, the too large width of the black frame area 202 is avoided, the touch effect of the partial area is improved, but the basic touch function of the other areas is not affected.

Referring to fig. 10, in the touch sensor 2201 of the embodiment of the present application, the electrode layer includes a first area and a second area, the plurality of electrode lines of the electrode layer 22012 are laid in the first area and the second area, and the density of the electrode lines in the first area is greater than that of the electrode lines in the second area, so that the touch accuracy of the first area is improved, and the second area can use fewer electrode lines, so that the difficulty of the process for manufacturing the touch sensor 2201 is reduced.

Fig. 11 illustrates a first area and a second area as an example, and the number of the first area and the second area is not limited in the embodiment of the present application.

The area of the first region and the area of the second region are not limited, for example, the area of the first region is smaller than the area of the second region, or the area of the first region is larger than the area of the second region, or the area of the first region is equal to the area of the second region.

The width of the first area and the width of the second area shown in fig. 10 and 11 are both equal to the width of the substrate 22011 in the touch sensor 2201, and the first area and the second area are adjacently distributed at the left end and the right end of the substrate 22011 in the touch sensor 2201, so that the routing of electrode lines, in particular the routing of the sensing electrode lines RX, is facilitated.

In fig. 12, the width of the first region of the visible region of the electrode layer 22012 is smaller than the width of the touch sensor 2201, the length of the first region is smaller than the length of the touch sensor 2201, and the remaining region of the visible region of the electrode layer 22012 is the second region. The sensing electrode line RX in the second area above the first area may be led out from the antenna side of the touch sensor 2201, connected to the touch pad 230 from the back side of the touch sensor 2201, or the touch pad 230 may be added to the antenna side of the touch sensor 2201, which is not limited in the embodiment of the present invention.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A display device, comprising:

the touch panel is used for receiving touch operation and comprises a touch sensor and a display panel positioned below the touch sensor, the touch panel is provided with a visible area and a black frame area, the touch sensor comprises a substrate, an electrode layer with a plurality of electrode wires is laid on the substrate, and the electrode layer is positioned in the visible area;

the touch control panel is used for driving and controlling the touch control sensor;

the flexible circuit board is located in a black frame area of the touch panel, and the flexible circuit board is electrically connected with the electrode wires in the electrode layer and the touch panel respectively.

2. The display device according to claim 1, wherein one end of the flexible circuit board extends outside the black frame region and is electrically connected to the touch pad.

3. The display device according to claim 1 or 2, wherein a lower surface of the flexible circuit board is flush with a lower surface of the substrate;

or the substrate extends into the black frame area, and the flexible circuit board is positioned above the substrate.

4. The display device according to claim 1 or 2, further comprising:

the adapter plate is used for electrically connecting the flexible circuit board with the touch pad.

5. The display device according to claim 4, further comprising:

and two ends of the flexible flat cable are respectively connected with the adapter plate and the touch panel.

6. The display device according to claim 1 or 2, wherein the electrode lines of the touch sensor are connected to the flexible circuit board by bonding.

7. The display device according to claim 1, wherein the electrode layer in the touch sensor comprises a first area and a second area, the electrode lines are laid in the first area and the second area, and the density of the electrode lines in the first area is greater than that in the second area.

8. The display device according to claim 1, wherein the plurality of electrode lines include a plurality of sensing electrode lines and a plurality of driving electrode lines;

the flexible circuit board includes:

a first flexible circuit board through which the plurality of driving electrode lines are electrically connected to the touch pad;

a second flexible circuit board through which the plurality of sensing electrode lines are electrically connected to the touch pad;

the first flexible circuit board and the second flexible circuit board are located on the same side of the touch sensor.

9. The display device according to claim 8, wherein a plurality of third flexible circuit boards are connected to one side of the display panel, the first flexible circuit board, the second flexible circuit board and the third flexible circuit board are located on the same side of the display panel, and the first flexible circuit board, the second flexible circuit board and the third flexible circuit board are arranged in a staggered manner.

10. The display device according to claim 9, wherein the first flexible circuit board and the second flexible circuit board are both located at a ground side end of the display panel;

a front case for shielding the first, second, and third flexible circuit boards.